Add IS_UNKNOWN operator test in Arrow Adapter #14109

Job	Run time
Windows (JDK 17)	15m 12s
Windows (JDK 8)	16m 18s
Linux (JDK 8, oldest Guava, America/New_York Timezone)	10m 41s
Windows (JDK 21)	14m 40s
Linux (JDK 11, Pacific/Chatham Timezone)	10m 44s
Linux (JDK 8, latest Guava, America/New_York Timezone)	12m 14s
Linux (JDK 21)	12m 16s
Linux (JDK 17)	10m 31s
Linux (JDK 11, Avatica main)	14m 19s
Linux (JDK 23)	10m 32s
macOS (JDK 21)	38m 44s
ErrorProne (JDK 11, latest Guava)	4m 11s
CheckerFramework (JDK 11)	10m 47s
CheckerFramework (JDK 11, oldest Guava)	10m 39s
Druid Tests	6m 59s
Linux (JDK 8) Slow Tests	4m 21s
	3h 23m 8s

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